Pathol Res Pract
Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address:
Published: November 2020
Chemo-resistance remains a considerable obstacle encountered in osteosarcoma (OS) therapy. Evidence has implied that a reduction in the expression of microRNAs (miRs/miRNAs) leads to exacerbated chemo-resistance. Hence, to better understand the role of miR-192 in the pathogenesis of OS during methotrexate (MTX) treatment, we restore miR-192 in the MG-63 cells and investigate the mechanisms, which are associated with MTX-resistance in OS. Exogenetic overexpression of miR-192 was established by transfecting miR-192 mimics into MG-63 cells using Lipofectamine. Trypan blue dye exclusion test was performed to evaluate the proliferation of the MG-63 cells. Chemo-resistance to MTX was determined using the MTT method after 48 h. ELISA cell death assay was performed to evaluate the apoptosis rate. The quantitative RT-PCR (RT-qPCR) was applied to determine the mRNA expression levels before and after the transfection. Our results illustrated that miR-192 is down-regulated in OS tumor cells. Transfection of miR-192 noticeably alleviated the mRNA expression levels of MMP9, c-Myc, K-Ras, CXCR-4, and ADAMTS compared with the control groups (P-values< 0.05). MTX Combination treatment with miR-192 noticeably elevated the cytotoxic effect of MTX and alleviated its IC (P < 0.05). Moreover, miR-192 significantly increased the apoptotic effect of MTX. These results implied that miR-192 enhances the sensitivity of MG-63 cells to MTX. Collectively, our results elucidated that miR-192 contributes to chemo-sensitizing MG-63 cells to MTX, and could be considered as a promising agent to overcome MTX-resistance in OS.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.prp.2020.153176 | DOI Listing |
Turk J Pharm Sci
January 2025
Saveetha University, Saveetha Institute of Medical and Technical Sciences, Saveetha College of Pharmacy, Department of Pharmaceutical Chemistry, Tamil Nadu, India.
Objectives: The present study aimed to assess the antiproliferative and pro-apoptotic effects of hinokitiol in osteosarcoma cells and targeting of glycogen synthase kinase 3 (GSK3).
Materials And Methods: The (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to evaluate the cytotoxic potential of hinokitiol in osteosarcoma cells. Various concentrations of hinokitiol (5, 10, 20, 40, 60, and 80 μg/mL) were tested, and the half-maximal inhibitory concentration (IC) was calculated.
J Med Chem
January 2025
Sezione di Scienze Farmaceutiche, NeuroFarba Department, Universita degli Studi di Firenze, Via Ugo Schiff 6, Sesto Fiorentino 50019, Italy.
Novel 3-sulfonamide pyrrol-2-one derivatives containing two sulfonamide groups were synthesized via a one-pot, three-component method using trifluoroacetic acid as a catalyst. Structural confirmation was achieved using spectroscopic techniques. The compounds were tested against four selected human carbonic anhydrase isoforms (hCA I, hCA II, hCA IX, and hCA XII).
View Article and Find Full Text PDFDNA Cell Biol
January 2025
Department of Orthopaedics, The Third People's Hospital of Hubei Province, Wuhan, China.
Exosome-delivered circular RNAs (circRNAs) are recognized as a key mechanism that regulates osteosarcoma (OS) progression. The purpose of this study is to discover the role of a novel circRNA hsa_circ_0000116 from exosomes in OS progression. Transmission electron microscopy, nanoparticle tracking analysis, and western blotting were used to identify the exosomes isolated from two OS cell lines (HOS and MG-63).
View Article and Find Full Text PDFJ Biomater Appl
January 2025
Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
This study aims to investigate the effects of adding nano-hydroxyapatite (nHA) to electrospun polycaprolactone (PCL) membranes for use in dental root regeneration. Porous membranes containing varying amounts of nHA (0, 1, 1.5, and 2.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd., Tabriz, Iran.
Hydroxyapatite (HA) is an engineered biomaterial that closely resembles the hard tissue composition of humans. Biological HA is commonly non-stoichiometric and features lower crystallinity and higher solubility than stoichiometric HA. The chemical compositions of these biomaterials include calcium (Ca), phosphorus (P), and trace amounts of various ions such as magnesium (Mg), zinc (Zn), and strontium (Sr).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!
© LitMetric 2025. All rights reserved.